Mobile users on Android can now access Udemy’s course marketplace, which offers Massively Open Online Courses (MOOCs) on a variety of topics.

According to Dennis Yang, Udemy’s COO and President, the new version couldn’t come soon enough: the company spent roughly a year getting the app to play nicely with Android, while also offering a native experience different from the iPhone.

“Optimizing takes a long time,” Yang explained via phone. “You want feature parity, but you want it unique to take advantage of the APIs of other platforms.”

Yang says that the move to Android is a natural extension of Udemy’s long-term goal — to get its course marketplace in the hands of as many people as possible. The company’s internal statistics show that mobile has become a big vehicle for Udemy users: the Udemy iOS app has already been downloaded 1 million times, and 20 percent of Udemy users access their courses via mobile.